FreeDV is open source software, released under the GNU Lesser Public License version 2.1. If you are a hardware or software developer, you can integrate FreeDV into your project using the LGPL-licensed FreeDV API.įreeDV is being developed by an international team of radio amateurs working together on coding, design, user interface and testing. You can run FreeDV using a free GUI application for Windows, Linux and OSX that allows any SSB radio to be used for low-bit-rate digital voice.Īlternatively, you can buy a SM1000 FreeDV adaptor that allows you to run FreeDV (1600 and 700D modes) on any HF radio without a PC or sound card. FreeDV is a Digital Voice mode for HF radio. # Note: if the packaged yasm is older than 1.2, you must download sudo apt-get install mercurial cmake cmake-curses-gui build-essential disable-cli -disable-ffms -disable-gpac -disable-lavf configure -enable-static -disable-opencl -disable-avs x265 is under the GNU Public License Version 2 or later (see for details), you must upgrade FFmpeg’s license to GPL in order to use it. Then pass –enable-libx265 to configure to enable it. Go to and follow the instructions for installing the library. 官方说明Įxternal libraries x265 FFmpeg can make use of the x265 library for HEVC encoding. Update: FFmpeg has HEVC encoding support using MulticoreWare libx265 now. Using patched FFmpeg with Chinese x265 support. Using standalone Chinese x265 then mux the resulting file with FFmpeg. This means with the latest Zeranoe build you can now do this: ffmpeg -i INPUT -x265-params crf=25 OUT.mov Using standalone MulticoreWare x265 and then mux the resulting file with FFmpeg. Anyways, these are a complete set of current possibilities of encoding HEVC in order of my recommendation: Directly using MulticoreWare libx265 with FFmpeg. Although the former started out first, it is practically dead now, and the latter is under active development and is supported by VideoLAN (the developer of x264). To make matters more confusing, there are two independent projects both named “x265”, one by a Chinese college student and is practically dead, and another by a commercial company called MulticoreWare. Of course you can still use some patched FFmpeg build, but it is not recommended.
Now you can use ffmpeg directly to encode HEVC or use another encoder than manually mux that into.
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